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sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 false08false 4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4truetruefalse4.00004.0000falsefalsefalse5falsetruefalse00falsefalsefalse6truetruefalse6.49006.4900falsefalsefalse7falsetruefalse00falsefalsefalse8truetruefalse6.26006.2600falsefalsefalse9falsetruefalse00falsefalsefalse10truetruefalse6.26006.2600falsefalsefalse11falsetruefalse00falsefalsefalse12truetruefalse8.85008.8500falsefalsefalsenum:percentItemTypepureThe estimated measure of the percentage by which a share price is expected to fluctuate during a period. 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